Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1993-04-28
1995-01-17
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C08K 320, C08L 6302
Patent
active
053826060
ABSTRACT:
A curing agent for aqueous epoxy resin emulsions is described, which curing agent contains 10-80% by weight of at least one emulsifier, 1-80% by weight of at least one coemulsifier, and 5-80% by weight of at least one bis(diamine)-diepoxide adduct. Optionally, the curing agent furthermore contains 0-80% by weight of a diamine or a mixture of two or more diamines. Said curing agent has the ability of forming microemulsions when water is added, preferably non-ionic oil-in-water microemulsions. Said microemulsions have a good shelf life. They are useful as curing agent for any desired aqueous epoxy resin dispersions, and they can also be used as curing agent in compositions based on epoxy resin and cement mortar.
REFERENCES:
patent: 3629181 (1971-12-01), Heer et al.
patent: 3758421 (1973-09-01), Nikles
Encyclopedia of Polymer Science and Technology, 1967, pp. 226-227.
Aylward D.
Marquis Melvyn I.
Sika AG vorm. Kaspar Winkler & Co.
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